I'm getting back into photography after a long absence. I just bought a Nikon D5000 to "get my eye back," so to speak. Just a basic kit with 18-55 and 55-200mm lenses. Most of my photography is outdoor. So for flash, I just have the on-camera flash that is part of the D5000. Believe it or not (gulp), it has done a nice job both during the day with fill and at night as a primary light- out of 100 or so pics, only one has a minimal amount of red eye which is easily corrected in post- I'm pretty impressed with that. Anyway- obviously that is not a long-term flash solution. Eventually I'm going to move up to a pro camera body in the Nikon line and use the D5000 for point and shoot and as a backup body. I'd like to buy into some flash equipment but what I buy now should not become useless in the future. I'd like to get into some lite portrait work, both indoors and outdoors. So, I'll need to get some Speedlights - I'm looking for recommendations here. SB-600? SB-900? Then I'll need off camera flashes that can be controlled by the primary unit and work with the camera TTL. Should I stick with all Nikon or buy into 3rd party equipment? Does the D5000 do off-camera flash? I was confused by the literature, here. I'd also like to get some light stands and umbrellas, but nothing too rediculous- an intermediate, all-inclusive kit would be great here. Again- I'm just planning here and trying to figure out a budget. For the moment, assume money is not an object (within reason). I'm not going to spend $15K on lighting equipment, but I will spend $1K-$2K in the end. Or, let me know a reasonable budget if I'm way off. I'm not a pro photographer, but I would like to get to the point where I could be a part-time pro (semi-pro?) and sell some stuff.